Year % of adults 2000 8.05186567750775 2005 6.89776175857572 2010 6.06202770103041 2011 5.91443147721605 2012 5.82125761714834 2013 5.66848681394024 2014 5.52177708766934 2015 5.42360995140455 2016 5.2866943018249